Protection-based automatic mud scraper control method and device

The invention relates to the technical field of mud scrapers, and discloses an automatic mud scraper control method and device based on protection, and the method comprises the steps: obtaining the position information of a time sensor and a chain gear on a mud scraper, and transmitting a data collection signal to the time sensor and the chain gear based on the position information; the method comprises the following steps: acquiring the time when a chain gear rotates for one circle based on a data acquisition signal, performing image shooting on the lower part of a clarification tank, obtaining a lower part sludge image of the clarification tank, determining the lower part sludge amount of the clarification tank according to the lower part sludge image, and sending out different early warning signals based on the lower part sludge amount of the clarification tank and the time when the chain gear rotates for one circle. A chain gear normal operation time sensing device is additionally arranged on the mud scra